EP 0246227 A4 19900205 - CYCLIC SPEED CONTROL APPARATUS IN VARIABLE STROKE MACHINES.
Title (en)
CYCLIC SPEED CONTROL APPARATUS IN VARIABLE STROKE MACHINES.
Title (de)
ROTATIONSGESCHWINDIGKEITSKONTROLLEINRICHTUNG FÜR MASCHINEN MIT VERÄNDERLICHEM HUB.
Title (fr)
APPAREIL DE REGLAGE DE LA VITESSE CYCLIQUE DES MACHINES A COURSE VARIABLE.
Publication
Application
Priority
US 8501997 W 19851010
Abstract (en)
[origin: WO8702423A1] A free piston engine includes speed control means which provide a wide range of engine speed control for selective connection and use of the engine with any one of a number of different types of energy absorbing devices. The desired control is achieved by use of two bounce chambers (18p and 18n) and a double-acting bounce piston unit (16) specifically located at an intermediate position along the axis of reciprocation of the piston rod assembly of such an engine, i.e. between a power piston (15) at one end of the piston rod and a connecting means at the other piston rod end for driving connection of the piston rod assembly with a movable member (e.g. reciprocating compressor piston (34) or reciprocating electric generator member) of the selected energy absorbing device. The control means further includes at least one pair of variably adjustable bounce chamber pressure control valves (23 and 24), one for each bounce chamber. Each control valve of such one pair provides for and controls a direct connection of its respective bounce chamber to ambient atmospheric air outside the bounce chamber. The controls further include sensing means (37) responsive to changes in demands on or operation of the selected energy absorbing device for variably and substantially simultaneously adjusting each control valve of such one pair and thereby similarly changing (i.e. both upwardly or both downwardly) the respective bounce chamber working pressures. Other bounce pressure control features are also described.
IPC 1-7
IPC 8 full level
F01B 11/00 (2006.01); F01B 11/02 (2006.01); F02B 75/04 (2006.01); F04B 17/00 (2006.01); F04B 49/20 (2006.01)
CPC (source: EP)
F02B 75/04 (2013.01); F04B 49/20 (2013.01)
Citation (search report)
- [XE] US 4568251 A 19860204 - BRAUN ANTON [US]
- See references of WO 8702423A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8702423 A1 19870423; AT E68037 T1 19911015; AU 5094285 A 19870505; AU 581044 B2 19890209; BR 8507298 A 19871103; DE 3584293 D1 19911107; DK 294187 A 19870715; DK 294187 D0 19870609; EP 0246227 A1 19871125; EP 0246227 A4 19900205; EP 0246227 B1 19911002; HU T48949 A 19890728; JP S63502523 A 19880922; NO 872410 D0 19870609; NO 872410 L 19870709
DOCDB simple family (application)
US 8501997 W 19851010; AT 85905954 T 19851010; AU 5094285 A 19851010; BR 8507298 A 19851010; DE 3584293 T 19851010; DK 294187 A 19870609; EP 85905954 A 19851010; HU 41985 D 19851010; JP 50519685 A 19851010; NO 872410 A 19870609